The most significant fact in history can be summed up in four words:Jesus Christ is God! The great declaration of the Bible is that God in human flesh was born in Bethlehem. It was God in the person of Jesus Christ who astonished the people of his day with his miracles and amazed them with his teaching. It was God who lived a perfect life and then allowed himself to be put to death on a Roman cross for humanity's sins. It was God who three days after he died broke the bonds of death and came out of the grave alive. The deity of Jesus—the fact that he was God in human flesh—is the bottom line of the Christian faith.
When the apostle John sat down to write his Gospel, he was not interested simply in adding one more biography of Jesus to the three already in existence. John wrote his book with a very specific purpose in mind. He tells us in 20:30-31:
Jesus did many other miraculous signs in the presence of his disciples, which are not recorded in this book. But these are written that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name.
John's book is not a biography; it's a theological argument. John wants to convince us that Jesus of Nazareth is God the Son. Then he wants to show us how that fact will change our lives in some rather amazing ways. It is by believing in Jesus Christ as the Son of God that we find life—real life, eternal life, a whole new kind of life!
Every event John records is designed to show us that Jesus is God. John pulls from the life of Jesus specific incidents that demonstrate his majesty and deity. Of particular interest to John are the sign miracles of Jesus. In the first twelve chapters of his book, John records seven miracles. These miracles were not performed simply to alleviate human suffering or to meet human need. The miracles were "signs." They pointed to the truth of Jesus' claim to be the Son of God.
John was the last Gospel writer. The best evidence points to a date around A.D. 90 for the composition of his Gospel. The other Gospels had been in circulation for some time. John wrote to add his unique perspective and to fill in some of the details not recorded by the other writers. He assumes his readers are familiar with the other Gospels. John does not mention, for example, the anguish of Jesus in the Garden of Gethsemane. The other writers had adequately described that incident. John does give us the details of Jesus' conversation with his disciples in the upper room. The other writers mention it only briefly.
John never mentions himself by name in the Gospel. He refers to himself simply as "the disciple whom Jesus loved." We have in this Gospel the memories of an intimate friend about the Lord Jesus. Jesus Christ had transformed John's life. I hope you are prepared to have that happen to you! You are about to begin a fascinating study focused on the greatest person who ever lived— Jesus Christ. If you will respond to what John writes in faith and obedience, you, like John, will experience a whole new kind of life.